Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc769fd44911fde…

MALICIOUS

PDF

89.0 KB Created: 2021-07-13 18:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0ee24594058de6352f170866f5265425 SHA-1: 3a04f324efbff34e625faeed9e6b7b52f5a78b44 SHA-256: 9cc769fd44911fde7498384a38cb6cc3756ff76dffb466c3c8287b42ad4904e5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains embedded URLs, one of which is associated with a feedproxy service, suggesting a potential lure to a malicious site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious intent, likely to deliver a secondary payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6359

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://feedproxy.google.com/~r/razvivatel/yapz/~3/um1bUVUAM38/square?utm_term=educational+background+example+essay
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e949d6320dbd0de28240da/1625901527094/wwe_2k19_on_android.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e904b437cb9044755ed4ff/1625883828527/80901014077.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed12676ebf0d48ea8b6bc3/1626149479714/code_of_honor_next_generation.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fab7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB7 16792 bytes
font_01_sfnt_off000112ce.bin
192a02420837b9187f46c7c82baa1067f9283bf2d37e0c235258f0ad7df9737e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112CE 11388 bytes
font_02_sfnt_off00012d3a.bin
d0df4bd62fc622000d0577b06702d7a02922ab34d78b7bca8619a2f4c2456e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D3A 16592 bytes

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